Leave the shop page title.

git-svn-id: https://plugins.svn.wordpress.org/orillacart/trunk@855956 b8457f37-d9ea-0310-8a92-e5e31aec5664
Various bug fixes

git-svn-id: https://plugins.svn.wordpress.org/orillacart/trunk@856019 b8457f37-d9ea-0310-8a92-e5e31aec5664
Shop manager role added.

git-svn-id: https://plugins.svn.wordpress.org/orillacart/trunk@856599 b8457f37-d9ea-0310-8a92-e5e31aec5664